could be that the 3.1 xsd was not up to date. please check that. If there is an error in the schema and you are sure your pd is correct, remove the schemareference in the xml and validation wil not occur
Thanks for your reply! my process definition hast the xmlns xmlns="urn:jbpm.org:jpdl-3.1", therefore i looked at http://docs.jboss.org/jbpm/xsd/jpdl-3.1.xsd, and http://docs.jboss.org/jbpm/xsd/jpdl-3.2.xsd where i couldn't find a corresponding element.
Due to the fact that its very very late curently i will look at removing the xmlns attribute from the process-definition tomorrow.
i'll let you know about the result
kind regards and greetings from switzerland
if it works without the schemadefinition, please file a jira issue to get the schema updated